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The hydraulic system of injection molding machine

by:FUHONG     2020-09-19
DKM high-speed injection molding machine, as a cutting-edge brand injection molding machine industry, injection molding machine has been fairly stable mature, especially the precision and speed have a lot of research. Injection molding machine structure is mainly composed of injection parts, mould parts, body, hydraulic system, heating system, control system, feeding device, etc. Today I will give you about the hydraulic system. Injection molding machine hydraulic system of hydraulic transmission, is based on the hydraulic oil as working medium, through the power element ( Oil pump) The prime mover's mechanical energy into hydraulic oil pressure can, again through the control element, and then with the aid of actuators ( Oil cylinder and oil motor) The pressure can be converted into mechanical energy, high-speed injection molding machine load to realize linear or rotary movement, and through the control components of remote controlling and regulating flow, setting the force and speed of the actuators. When the outside of the above system has disturbance, components of the output of general to deviate from the original setting, produce certain error. Injection molding machine hydraulic system of hydraulic control: a. Injection molding machine hydraulic system of hydraulic control and hydraulic transmission, in the system also includes power components, control components and actuators, and through the oil transfer power. The two different points are the hydraulic control with feedback device, the effect of feedback device output components is the implementation of the ( Displacement, speed, strength and other mechanical quantity) Feedback back to the input data ( Can be change, also can be a constant) After comparison, using comparative deviation to control system, the components of the output of the changes over the amount of input or constant. It is a kind of closed loop of hydraulic drive system, high-speed injection molding machine is also called a hydraulic servo system or hydraulic servo system. b。 Hydraulic drive system is used in the on-off type or logical type control components, the control purpose, is to keep the value of a set of stable or simple changes of direction, also called fixed value and sequence control components. c。 Servo control element is used in the hydraulic control system, with feedback structure, and electrical devices to control has higher control precision and response speed, the control of pressure and flow of constant change. Output power can be enlarged. d。 Proportional control is a control between the above two, the proportional control valve is used in the on-off control element and servo control element on the basis of the developed a kind of electric - hydraulic control elements, some of the characteristics of both the above two kinds of components, is used to control the on-off type with the hand can't meet the requirements, but also do not need the servo valve on the hydraulic system as strict pollution control requirements of the occasion.
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